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How to Find & Fix AC Freon LeaksLast updated August 12, 2024Refrigerant leaks are a common cause of air conditioner failure. Leaking Freon and other refrigerants can prevent an air conditioner from cooling properly. Learn how to locate a refrigerant leak and repair or replace the faulty equipment.This guide reviews how to find and fix Freon leaks as well as when Freon is legal to use.Difficulty:IntermediateDuration:2-4 hoursProject GuidePro GuidesPreventive Maintenance & RepairsProTable of Contents1How to Find a Freon Leak2How to Fix AC Freon Leak3Is Freon Legal to Use?4More Tools. More Products. More Perks.How to Find a Freon LeakThe following are signs of faulty performance that can indicate potential Freon leaks:Poor cooling performanceLonger cooling cyclesHumid indoor airIce on evaporator coilsHigher utility billsClients with any of these issues should have their ACs inspected for refrigerant leaks.One of the most overt signs of a Freon leak is a sweetish smell comparable to nail polish remover. This may indicate the general location of the leak and where to begin testing.Oil spots on tubes, joints or near HVAC components may come from the oil in refrigeration coolant which would indicate a leak.A bubble test is the fastest and easiest method for finding Freon leaks but is more effective on larger leaks than smaller ones. The larger the hole, the more easily the solution will reveal a leak.Prepare a solution of soapy water, using about one liter of water and 0.5 teaspoon of .Spray the joints of the refrigerant lines with the solution.Look for large bubbles at the joints. Bubbles will indicate a Freon leak.Spray the along length of the line if you suspect that exterior damage, such as from a , is the source of the leak.To find more challenging leaks, use a detector. These tools have electronic sensors that detect the presence of Freon or other refrigerants.Turn on the detector.Hold the nozzle or probe of the detector to the top of the refrigerant line.Run the detector slowly down the length of the line until it signals the presence of refrigerant.For the most difficult leaks, try a pressure resistance test. This uses compressed gas to reveal punctures in an air conditioning system.Pump compressed nitrogen or other gas into the air conditioner system.Watch the pressure gauges for fluctuating air pressure, which confirms the presence of a leak.Listen for the hissing sound of escaping nitrogen, which will indicate the location of the hole or puncture.As an alternate to a nitrogen test, add an ultraviolent dye to the system and use a to search for traces of leaks.How to Fix AC Freon LeakThe following are common methods to repair a leak in an AC.If an evaporator coil has a minor leak, patch the damaged area.If the coil has multiple holes or significant wear, replace the entire coil.If the lines that carry the coolant from the condenser to the coil are damaged, replace the line set.If the Schrader valve is leaking, repair the valve or replace the rubber seal as needed.Reattach flare connections.Replace corroded tubing.Pro Tip: Encourage clients to have their serviced at least once a year, which can reveal problems before they become leaks.Is Freon Legal to Use?Freon is the brand name for formerly the most common refrigerant in U.S. air conditioners. Also called R-22, Freon is classified as a chlorofluorocarbon, a chemical found to have harmful effects on the atmosphere.The United States has gradually phased Freon out of use. In 2009, the United States stopped manufacturing new air conditioners that use Freon. In 2020, the Environmental Protection Agency officially banned the refrigerant.It is legal for older air conditioners to continue to use Freon, but it can be acquired only by EPA-licensed technicians at refrigerant suppliers. Because new Freon is no longer manufactured, every year the supply will continue to go down and the price will go up.The newer, preferred category of refrigerant is called R-410A or Puron. Puron cannot be used in air conditioners that use Freon. Air conditioners that run on Puron tend to be quieter, less toxic and more energy-efficient than Freon air conditioners.Pro Tip: Advise clients about the advantages of upgrading an old AC to a newer model that uses Puron. Freon does not need replenishment unless the unit has a leak. Air conditioners wear out after 15-20 years, so most Freon-using units should be due for replacement.More Tools. More Products. More Perks.Be more competitive and boost your bottom line with , The Home Depot’s free loyalty program built for Pros. Sign up today to access the enhanced Pro Online Experience, built with the online business tools and time-saving features Pros need. in your free Pro Xtra account to organize orders by properties, jobs and more. Set your account preference to require job names on every online purchase for even more transparency in your spend management.Related ProductsSee MoreRelated GuidesExplore More on homedepot.comBuilding MaterialsDoors & WindowsElectricalHardwareOutdoor GardenOutdoor Living, Refrigerant leaks are a common cause of air conditioner failure. Leaking Freon and other refrigerants can prevent an air conditioner from cooling properly. Learn how to locate a refrigerant leak and repair or replace the faulty equipment. This guide reviews how to find and fix Freon leaks as well as when Freon is legal to use., Worried about an AC refrigerant leak? Learn the warning signs, common causes, and expert repair tips to restore cooling efficiency and save money..
There are few things more important to homeowners than keeping their AC systems running. Use this guide on AC leak repair to keep your home cool and comfy., Learn how to troubleshoot a leaking air conditioner to find the source of the issue and fix it., If you’re curious about how much it will cost to repair an AC leak, this comprehensive guide will cover everything you need to know., Refrigerant leaks in an AC unit can diminish its cooling efficiency, cause environmental harm, and result in expensive repairs if left untreated. This comprehensive guide covers what causes refrigerant leaks, how to spot them, associated repair costs, and actionable steps to prevent future leaks., When your air conditioning system starts leaking water, it can quickly turn from a minor annoyance into a major problem that damages your home and leaves you uncomfortable. Understanding how to address AC leak repair properly can save you money and prevent costly water damage to your property., No cold air on a hot day? Shall you top off your AC coolant? Does it mean you got a freon leak? Read on to learn about signs of freon leaks..